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-rw-r--r--gcc/tree-optimize.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/tree-optimize.c b/gcc/tree-optimize.c
index ef60cde53bf..aebcbb10c60 100644
--- a/gcc/tree-optimize.c
+++ b/gcc/tree-optimize.c
@@ -33,6 +33,7 @@ along with GCC; see the file COPYING3. If not see
#include "timevar.h"
#include "function.h"
#include "langhooks.h"
+#include "diagnostic-core.h"
#include "toplev.h"
#include "flags.h"
#include "cgraph.h"